In plain words
Just as happiness lies between two troubles, so between two times of happiness there lies a trouble too.
Hardship and happiness, the two, are joined together; no one has the power to part them; happiness one cannot see anywhere on its own; when hardship bears fruit, they call it happiness.
Man does not try to recognise this Satya. Sinking low when troubles come; swelling with elation when happiness and joy are gained. In this very rising and sinking man's life comes to its end. So man must experience the equanimity that neither swells nor sinks. In hardship there is a happiness. In happiness there is a hardship. Only the man who one day recognises this Satya and leads his life with equanimity gains true Śānti.
The whole universe is contained in man's own will
All of man's joys and sorrows are contained in the small seed called will. Not recognising this Satya, man keeps changing his resolves in many ways. A big tree, invisible to us and unmanifest, is contained in a small seed. Only when we sow that seed does it grow and take shape as a big tree. So big a tree, these branches, twigs, fruits and leaves, all of them are contained in that small seed itself. In the same way, though man's will is extremely subtle, the whole universe is contained in this very will. ‘Subtler than the subtlest, vaster than the vastest.’ In this atom itself the mighty universe is contained. And in this endless universe the tiny seed is contained too. The children know it well.